You have to be comfortable with being uncomfortable if you want to make progress in mathematics.

煤炭使美国在世界范围内保持竞争力。

"You are the light that makes my darkness disappear."

The discovery of topological insulators has opened up a new frontier in condensed matter physics, where the interplay between topology and symmetry leads to novel quantum states of matter.

一个人是危险的，一个没有什么可失去的人更危险。

成为人类就是在世界中存在，而在世界中存在就是在时间中存在。

合作是解决复杂问题的关键。